1. Kev xaiv cov khoom siv: cov khoom siv hlau tsim nyog yuav tsum tau xaiv raws li cov khoom ntawm qhov nruab nrab thiab kev ua haujlwm.
2. Kev xaiv tshwj xeeb: Cov hlau corrugated yeeb nkab uas tsim nyog yuav tsum tau xaiv los ntawm kev txiav txim siab tsis zoo xws li kev ua haujlwm siab, qhov kub thiab txias, sab hauv txoj kab uas hla, thiab qhov ntev ntawm cov kav dej.
3. Kev ceev faj txog kev txhim kho: Cov yeeb nkab corrugated yuav tsum tau muab tso rau hauv nws cov elongation lossis luv luv txwv kom tsis txhob muaj kev ntxhov siab ntau dhau uas tuaj yeem ua rau cov yeeb nkab tsis ua haujlwm.